Thursday, February 14, 2013

Gear Selector Problem

Before I dismantled the bike is was apparent that only two gears and a neutral could be selected in the gearbox. I'm not familiar with these bikes so I sort of work it out as I go. But I'm a bit stumped with this. The gear selector lever operates a shaft which extends through to the clutch side of the engine. This shaft the operates a pawl which rotates the shaft that selects the gears. The problem is that the shaft that the pawl operates appears to be either incorrectly assembled or missing a part. I'm not sure. The parts book is a little vague on how it should look.

The Pawl mechanism pulls or pushes on the pins that protrude from the shaft end. See how one of the pins does not protrude. I have an idea that it should however I'm not sure. The parts book doesn't help. Any ideas? I've posted on a few websites however no one seems to be able to assist. I may have to take this to a specialist however the one I use is very good but very unreliable. It could take months to get the engine back.


  1. I would say there's definately something amiss with the low pin.That's probably why your only getting two gears - the shifter can't rotate past the gap. I think you might be missing a plate that goes on the end of those pinsand is screwewd on through that hole in the middle.It creats a sort of cage so that the pins don't flex or flop around.

  2. You're missing the side plate, bolt & washer. There parts are still available. The short dowel pin is ok. It's held there by a circlip. Make sure the indent bolt, spring & ball bearing are in place. This stops the drum each time the pawl turns the drum. See for parts list & available parts. Good luck.